50mm f/2.5 Summarit-M

Leica Order No. - 11644
Production era - 2007-2014 - superseded by 50mm f/2.4 Summarit-M
Angle of view (diagonal, horizontal, vertical) - For 35 mm (24 x 36 mm) : 47 deg, 40 deg, 27 deg, - for LEICA M8 (18 x 27 mm) : 36 deg, 30 deg, 20 deg, corresponds to a focal length of approx. 67 mm with 35 mm-format
Number of lenses /groups - 6 /4
Focusing range - 0.8 / 2.6 ft to ∞
Aperture / type - f /2.5 - f /16 - Setting/Function Preset, with click-stops, half values available / 9-blade
Smallest object field/Largest reproduction ratio - For 35 mm, approx. 338 x 508 mm /1:14.1 = for LEICA M8, approx. 254 x 380 mm /1:14.1
Position of entrance pupil - (from apex of 1st lens element) 28.0 mm / 1.1 in
Scales - Combined meter/feet graduation
Lens mount - Leica M quick-change bayonet with 6 bit lens identification bar code for digital M models
Filter mount/Lens hood - Non-rotating, internal thread for screw-on filters size E39, external thread with stop for lens hood, protection ring for external thread included in delivery
Accessories - Hood: 12459
Viewfinder - Camera viewfinder
Material - Anodized aluminum, brass and optical glass
Length to bayonet flange - approx. 33.0 mm / 1.3 in
Largest diameter - approx. 51.5 mm / 2 in
Weight - approx. 230 g / 8.1 oz
Inscription - LEICA SUMMARIT-M 1:2.5/50 E 39 (serial no.)
Leica Tech Data - 50mm f/2.5 Summarit-M.pdf

Comment

SN Start	SN End	Product	Year	Total
-4038014	4052371-	50mm f/2.5 Summarit-M	2007	14,358+
-4052451	4057435-	50mm f/2.5 Summarit-M	2008	4,985+ ~4057067
-4108725	4113154-	50mm f/2.5 Summarit-M	2009	4,430+
-4140311	4147516~	50mm f/2.5 Summarit-M	2010-2011	7,206+
~4157707	4157886-	50mm f/2.5 Summarit-M	2012	180+
-unknown	4157779~	50mm f/2.5 Summarit-M	2013	unknown
-4185735	4186031-	50mm f/2.5 Summarit-M	2014	297+
TOTAL	ASSIGNED	SERIAL NUMBERS	2008-2014	unknown